Grinder shaft



Patented Apr. 5, 1927.

UNITED STATES i FEED H. HEUB'ING, OF NIAGARA, WISCONSIN.

GRINDER SHAFT.

Application filed April 29, 1925. Serial No. 26,724.

This invention relates to mountings for grindstones or grinding wheels and has for its object the provision of means whereby the grinder-engaging elements may be easily removed therefrom when necessary. The invention also seeks to provide a grinder mounting which may be easily disassembled but at the same time will firmly hold the grinder when in use. The invention is illustrated in the accompanyingdrawing and will be hereinafter fully set forth, the novel features being particularly pointed out in the appended claim.

In the drawing:

Figure 1 is a sectional elevation of a grinder shaft having a grinder mounted thereon in accordance with my invention, and

Fig. 2 is a transverse section on the line 2-2 of Fig. 1.

The grinder shaft 1 may be provided at its ends with any convenient or approved means for supporting the same and applying power thereto. In carrying out the present invention, an annular shoulder or abutment 2 is formed upon the shaft and when a grindstone or wheel, indicated at 3, is mounted upon the shaft, a bushing 4 of Babbitt metal or the like is fitted around the shaft immediately against the said abutment. A bushing sleeve 5 of brass or other similar metal is keyed upon the shaft so as to abut the bushing or washer 4-, and this bushing sleeve is exteriorly threaded, as shown in Fig. 1. A clamping flange 6 is threaded onto the bushing` sleeve 5 and is adapted to bear against the side of the gr'inder 3, as clearly shown. At the opposite side of the grinder, a bushing sleeve 7, corresponding in all respects to the bushing sleeve 5, is keyed upon the shaft and a fiange 8 is fitted upon this bushing sleeve, the grinder being held by and between the tianges 6 and 8 in the usual manner. At the outer end of the bushing sleeve 7 is a washer 9 of Babbitt metal or the like, and this washer should be thick enough to extend from the end of the sleeve 7 to an annular groove 10 formed in the shaft. Engaged in the annular groove 10 and encircling the shaft is a split collar 11 which is secured firmly about the shaft as by a bolt or pin 12 inserted through the collar and the shaft. It Will be understood, of course, that either of the bushmgs 5 or 7 may have left hand threads.

The grinder is operated in the usual way but when the washers 4 and 9 have been worn, the bushings 5 or 7 may be slid longitudinally of the shaft so that the iflanges 6 and 8 carried by them respectively will be withdrawn from the grinder without requirmg a cutting away or digging into of the grinder as is now generally the case. The split collar 11 may be easily withdrawn from the shaft so that new washers of Babbitt metal may be inserted and the device then, of course, rendered capable of further use. By the use of my invention, a new grinder may be easily and quickly substituted for a worn grinder or new Babbitt metal washers may be substituted for worn washers whenever necessary without requiring the laborious Cutting of the grinder which is incident to the use of mountings heretofore knownto me. The split collar 11 may be very easily and quickly removed from the shaft and thenas easily and quickly returned so that the repair or the titting of new parts can be accomplished without loss of the use of the grinder for any considerable period.

Having thus described the invention, I

claim:

A grinder shaft having an annularly eX- tending groove formed therein, an annularly extending abutment shoulder rigid with said shaft and spaced from said groove longitudinally of the shaft, threaded sleeves keyed upon said shaft, in spaced relation to each other between the groove and shoulder and having their outer ends spaced from the groove and shoulder, a grinder upon said shaft between said sleeves, clamping disks threaded upon said sleeves and having firm gripping engagement with opposite sides of said grinder, a collar removably secured in said groove and of greater external diameter than said shaft` and forming` a second annularly extending abutment, a removable fastener passed radially through said collar and shaft, and soft metal washers upon said shaft fitting snugly between said shoulder and collar and the outer ends of said sleeves.

In testimony whereof I afix my signature.

FRED H. HEURING. [a 8.] 

